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 <head>

  <title>CSS Test: box offsets - containing block for absolute positioned boxes</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <link rel="help" title="9.3.2 Box offsets: 'top', 'right', 'bottom', 'left'" href="http://www.w3.org/TR/CSS21/visuren.html#position-props" />
  <meta content="image" name="flags" />
  <meta content="Box offsets (bottom, left, right, top) for an absolutely positioned box refers to the padding box of its nearest positioned ancestor; such padding box forms and acts as the containing block of the absolutely positioned box." name="assert" />

  <style type="text/css"><![CDATA[
  body {margin: 8px;}

  #nearest-positioned-ancestor
  {
  background-color: yellow; /* padding box will be yellow */
  border: orange solid 50px; /* border box will be orange */
  height: 100px; /* a bright green square 100px by 100px image will serve as content box */
  margin-left: 100px;
  padding: 50px;
  position: relative;
  top: auto;
  width: 100px;
  }

  div > div
  {
  background-color: blue;
  color: white;
  height: 25px;
  position: absolute;
  width: 25px;
  }

  div#top-left
  {
  left: 0px;
  top: 0px;
  }

  div#top-right
  {
  right: 0px;
  top: 0px;
  }

  div#bottom-left
  {
  bottom: 0px;
  left: 0px;
  }

  div#bottom-right
  {
  bottom: 0px;
  right: 0px;
  }
  ]]></style>

 </head>

 <body>

  <p>Test passes if there is a blue square at each corner of the yellow square.</p>

  <div id="nearest-positioned-ancestor"><img src="support/100x100-lime.png" alt="Image download support must be enabled" />
    <div id="top-left">TL</div>
    <div id="top-right">TR</div>
    <div id="bottom-left">BL</div>
    <div id="bottom-right">BR</div>
  </div>

 </body>
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